Merged

Backend.py

@@ -170,7 +170,8 @@ def ftpDownload(ftp, file, stream):
     #create tkinter window
     print("downloading file: "+file)
     dialog = CTk()
-    dialog.attributes('-type', 'dialog')
+    if os.name == 'posix':
+        dialog.attributes('-type', 'dialog')
     dialog.title("Downloading Modpack")
     set_appearance_mode("dark")
     set_default_color_theme("blue")

Main.py

@@ -54,7 +54,8 @@ def main():
 
     # GUI for selecting Prism instance path
     app = CTk()
-    app.attributes('-type', 'dialog')
+    if os.name == 'posix':
+        app.attributes('-type', 'dialog')
     app.geometry("1280x720")
     app.title("FamilyCraft Launcher")
     set_appearance_mode("dark")

Upload.py

@@ -84,7 +84,8 @@ def main():
     fileName = "modpack.mrpack"
 
     app = CTk()
-    app.attributes('-type', 'dialog')
+    if os.name == 'posix':
+        app.attributes('-type', 'dialog')
     app.geometry('500x400')
     app.title("FamilyCraft Launcher Upload Utility")
     set_appearance_mode("dark")